RT Journal
T1 THE EFFECT OF SEX ON THE ACCURACY OF PREDICTING CARCASS COMPOSITION OF ROSS BROILER CHICKENS
A1 T. M. Shafey
A1 M. A. Alodan
A1 E.O.S. Hussein
A1 H.A. Al-Batshan
JF Journal of Animal and Plant Sciences
JO JAPS
SN 1018-7081
VO 23
IS 4
SP 975
OP 980
YR 2013
FD 2013/08/01
DO DOI NA
AB <p>Linear regression equations predicting carcass composition by live body weight were developed using data from 40 males (M) and 40 females (F) of Ross broiler chickens at 33 days of age. Equations from M, F and combined sexes (M+F) were compared to examine the effects of sex on the precision of predicting carcass composition. M birds had higher live body weights and weights of carcasses, drumsticks and wings than F birds. Live body weight was positively correlated with all the carcass components in M and M+F (r=0.98 to 0.26) and all carcass components except abdominal fat in F birds (r=0.99 to 0.46). Prediction equations for carcass weight and carcass composition of breast, drumsticks, thighs, back and wings of F birds were slightly more variable in precision (R2=98.3 to 21.2%) than those developed in Mbirds (R2=96.9 to 63.4%), and equations developed from M + F birds were intermediate. Sex of bird significantly influenced the R 2 when predicting neck and wings weights. It can be concluded that prediction equations developed fromlive body weight can be useful to estimate carcass composition. Equations identified differences between sexes in predicting weights of wings and neck in the carcass of Ross broiler chickens.</p>
K1 Broiler, Chicken, Carcass components, Regression equations
PB Pakistan Agricultural Scientists Forum
LK https://thejaps.org.pk/AbstractView.aspx?mid=2013-JAPS-405